Attachment for woodworking-machines.



PATENTED MAY 17, 1904.

I. M. GELVIN. ATTACHMENT FOR WOODWORKING MACHINES.

APPLICATION TILED FEB. 19. 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

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No. 759,983- PATBNTED MAY 17, 1904. F. M. GELVIN. ATTACHMENT FORWOODWORKING MAGHINES.

APPLICATION FILED FEB. 19, 1903.

N0 MODEL. 2 SHEETS-SHEET 2.

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UNITED STaTTJs Patented May 17 1904.

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ATTACHMENT FOR WOODWORKlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 759,983, dated May 17,1904.

Application filed February 19, 1908. Serial No. 144,187. (No model.)

1'0 all whom. it may concern:

Be it known that I, FRANCIS M. GnLvIN, a citizen of the United States,residing at Shelbyville, in the county of Shelby and State of Indiana,have invented a new and useful Attachment for Woodworking Machines, ofwhich the following is a specification.

My invention is an improved guard for woodworking-machines, and. isespecially adapted to be used as atable-guard in connection withfrizzer-bits, and in order to more clearly illustrate the manner ofarranging the guard I have shown same in use in connection with a toolof this kind, though it will be obvious that the guard can be used withother wood or metal working tools.

In the accompanying drawings, Figure 1 is a perspective view of my guardin position. Fig. 2 is a side elevation of my device, theoperating-table being in section. Fig. 3 is a plan view of my guardinclosing a frizzen bit. Fig. i is a detail view of one of the wireguardmembers detached from the arms. Fig. 5 is a detail perspective view ofthe guard, one arm and the wire members being detached. Fig. 6 is adetail perspective view of one of the arms detached. Fig. 7 is aperspective View of the guard-bracket.

In the drawings, A represents the operating-table; B, the spindle-shaftprojecting upward through the table and carrying the frizzer-bit B. Asbefore explained, these parts are shown only to illustrate the use of myguard and no description of them is necessary. The guard-bracket has ahorizontal slotted base member C and the vertical stand ard C and issecured to the table by suitable bolts passing through the elongatedslot (1*, which permits the bracket to be adjusted toward and away fromthe spindle.

The guard itself is composed of three separate parts with supplementalparts fitting thereon, the main guard being substantially in the shapeof a horseshoe and comprising the central member D and the arms I), andfitting on each arm is a wire supplemental guard D The member I) isthickened and vertically slotted in its central portion, the standard 0fitting in the slot D and the guard sliding on A lateral threadedaperture D are serrated, and the surface of the reduced portions of thearms are also serrated, the serrations being shown at D", the reducedportions of the arms overlappingthe reduced portions of the member D. Anelongated slot D is formed in the reduced portions of the member D,while the overlapping portions of the arms are perforated, and suitablebolts passing through the perforations and slots bind the parts togetherin a manner readily understood.

The elongated slot D permits adjustment of the arms with reference tothe member I), and the serrations prevent any movement of the arms withreference to this member when the bolts are tightened.

Sockets D are formed in the arms, and in these sockets are secured theends of the U- shaped wire member I). This member is contrally bentinward, as shown at D".

It will be seen from the above thati'ny guard can be adjusted in avariety of ways, according to the nature of the work being done and .thetool in connection with which it is used.

It can be assembled complete, as shown in Fig. 1, elevated and lowered,the ends of the arms may be brought nearer to each other by adjustingthe arms, and the entire main guard can be used without the wiremembers, or the guard may assume the shape shown in Fig. 5, one arm andthe members D being removed.

The bracket illustrated in Fig. 7 is made of spring -steel, and theguard is set on the bracket, and the work in passing under the guardtits snug and tight and the springbracket holds the work tight to thetable, making the guard an eificient holddown for work onfrizzer-machines, relieving the work of the danger incident to holdingdown the work by the hands.'

Having thus fully described my invention,

the latter being longitudinally slotted, bolts adapted to pass throughthe arms and slots of 5 the central member, nuts adapted to fit saidbolts and hold the arms in their adjusted position on the reducedportions of the central member, and a compound curved Wire railingarranged on each arm, as and for the purpose 2 specified;

FRANCIS M. GELVIN;

WVitnesses:

A. E. LIsHER, WV. 0. NOFFSINGER.

